Quiz de révision : Mathématiques 7ème année — 1er trimestre

Question 1 sur 10 10:00

[{"id":4339,"question":"Quel est le résultat de l'opération suivante : 15 + 7 × 3 ?","option_a":"36","option_b":"66","option_c":"42","option_d":"22","option_e":"","option_f":"","bonne_reponse":"A","explication":"On applique la règle de priorité : la multiplication est prioritaire sur l'addition. 7 × 3 = 21, puis 15 + 21 = 36.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":4340,"question":"Vrai ou Faux : La fraction 3\/4 est équivalente à 0,75.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"3 divisé par 4 donne bien 0,75, donc la fraction est équivalente à ce nombre décimal.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":4341,"question":"Quel est le PGCD de 24 et 36 ?","option_a":"6","option_b":"12","option_c":"8","option_d":"4","option_e":"","option_f":"","bonne_reponse":"B","explication":"Les diviseurs de 24 sont : 1, 2, 3, 4, 6, 8, 12, 24. Ceux de 36 sont : 1, 2, 3, 4, 6, 9, 12, 18, 36. Le plus grand commun est 12.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":4342,"question":"Si 5 cahiers coûtent 10 dinars, combien coûtent 8 cahiers ?","option_a":"12 dinars","option_b":"16 dinars","option_c":"18 dinars","option_d":"20 dinars","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le prix d'un cahier est 10 ÷ 5 = 2 dinars. Pour 8 cahiers : 8 × 2 = 16 dinars.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":4343,"question":"Vrai ou Faux : Le périmètre d'un carré de côté 5 cm est 20 cm.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le périmètre d'un carré se calcule par 4 × côté. Ici, 4 × 5 = 20 cm, donc l'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":4344,"question":"Quel est le résultat de 45 ÷ 9 ?","option_a":"5","option_b":"6","option_c":"4","option_d":"7","option_e":"","option_f":"","bonne_reponse":"A","explication":"45 divisé par 9 donne 5, car 9 × 5 = 45.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":4345,"question":"Si un rectangle a une longueur de 8 cm et une largeur de 3 cm, quelle est son aire ?","option_a":"22 cm²","option_b":"24 cm²","option_c":"11 cm²","option_d":"16 cm²","option_e":"","option_f":"","bonne_reponse":"B","explication":"L'aire d'un rectangle se calcule par longueur × largeur. Ici, 8 × 3 = 24 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":4346,"question":"Vrai ou Faux : 0,5 est égal à 1\/2.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"0,5 est la forme décimale de la fraction 1\/2, donc l'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":4347,"question":"Quel est le résultat de (12 + 8) × 2 ?","option_a":"40","option_b":"20","option_c":"30","option_d":"24","option_e":"","option_f":"","bonne_reponse":"A","explication":"On commence par l'addition entre parenthèses : 12 + 8 = 20, puis on multiplie par 2 : 20 × 2 = 40.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":4348,"question":"Si un train parcourt 300 km en 3 heures, quelle est sa vitesse moyenne ?","option_a":"90 km\/h","option_b":"100 km\/h","option_c":"80 km\/h","option_d":"110 km\/h","option_e":"","option_f":"","bonne_reponse":"B","explication":"La vitesse moyenne se calcule par distance ÷ temps. Ici, 300 ÷ 3 = 100 km\/h.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]